The real Mr. Giuliani, whom many New Yorkers came to know and mistrust, is a narrow, obsessively secretive, vindictive man who saw no need to limit police power. Racial polarization was as much a legacy of his tenure as the rebirth of Times Square.

Mr. Giuliani’s arrogance and bad judgment are breathtaking. When he claims fiscal prudence, we remember how he ran through surpluses without a thought to the inevitable downturn and bequeathed huge deficits to his successor. He fired Police Commissioner William Bratton, the architect of the drop in crime, because he couldn’t share the limelight. He later gave the job to Bernard Kerik, who has now been indicted on fraud and corruption charges.

The Rudolph Giuliani of 2008 first shamelessly turned the horror of 9/11 into a lucrative business, with a secret client list, then exploited his city’s and the country’s nightmare to promote his presidential campaign.